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The uncertainty created by Trump’s erratic policymaking could not have come at a worse time for the industry.

This is the second story in a Heatmap series on the “green freeze” under Trump.
Climate tech investment rode to record highs during the Biden administration, supercharged by a surge in ESG investing and net-zero commitments, the passage of the Infrastructure Investment and Jobs Act and Inflation Reduction Act, and at least initially, low interest rates. Though the market had already dropped somewhat from its recent peak, climate tech investors told me that the Trump administration is now shepherding in a detrimental overcorrection. The president’s fossil fuel-friendly rhetoric, dubiously legal IIJA and IRA funding freezes, and aggressive tariffs, have left climate tech startups in the worst possible place: a state of deep uncertainty.
“Uncertainty is the enemy of economic progress,” Andrew Beebe, managing director at Obvious Ventures, told me.
The lack of clarity is understandably causing investors to throw on the brakes. “We’ve talked internally about, let’s be a little bit more cautious, let’s be a little more judicious with our dollars right now,” Gabriel Kra, co-founder at the climate tech firm Prelude Ventures, told me. “We’re not out in the market, but I would think this would be a really tough time to try and go out and raise a new fund.”
This reluctance comes at a particularly bad time for climate tech startups, many of which are now reaching a point where they are ready to scale up and build first-of-a-kind infrastructure projects and factories. That takes serious capital, the kind that wasn’t as necessary during Trump’s first term, or even much of Biden’s, when many of these companies were in a more nascent research and development or proof-of-concept stage.
I also heard from investors that the pace of Trump’s actions and the extent of the economic upheaval across every sector feels unique this time around. “We’re entering a pretty different economic construct,” Beebe told me, citing the swirling unknowns around how Trump’s policies will impact economic indicators such as inflation and interest rates. “We haven’t seen this kind of economic warfare in decades,” he said.
Even before Trump took office, it was notoriously difficult for climate companies to raise funding in the so-called “missing middle,” when startups are too mature for early-stage venture capital but not mature enough for traditional infrastructure investors to take a bet on them. This is exactly the point at which government support — say, a loan guarantee from the Department of Energy’s Loan Programs Office or a grant from the DOE’s Office of Clean Energy Demonstrations — could be most useful in helping a company prove its commercial viability.
But now that Trump has frozen funding — even some that’s been contractually obligated — companies are left with fewer options than ever to reach scale.
One investor who wished to remain anonymous in order to speak more openly told me that “a lot of the missing middle companies are living in a dicier world.” A 2023 white paper on “capital imbalances in the energy transition” from S2G Investments, a firm that supports both early-stage and growth-stage companies, found that from 2017 to 2022, only 20% of climate capital flowed toward companies at this critical inflection point, while 43% went to early-stage companies and 37% towards established technologies. For companies at this precarious growth stage, a funding delay on the order of months could be the difference between life and death, the investor added. Many of these companies may also be reliant on debt financing, they explained. “Unless they’ve been extremely disciplined, they could run into a situation where they’re just not able to service that debt.”
The months or even years that it could take for Trump’s rash funding rescission to wind through the courts will end up killing some companies, Beebe told me. “And unfortunately, that’s what people on the other side of this debate would like, is just to litigate and escalate. And even if they ultimately lose, they’ve won, because startups just don’t have the balance sheets that big companies would,” he explained.
Kra’s Prelude Ventures has a number of prominent companies in its portfolio that have benefitted from DOE grants. This includes Electric Hydrogen, which received a $43.3 million DOE grant to scale electrolyzer manufacturing; Form Energy, which received $150 million to help build a long-duration battery storage manufacturing plant; Boston Metal, which was awarded $50 million for a green steel facility; and Heirloom, which is a part of the $600 million Project Cypress Direct Air Capture hub. DOE funding is often doled out in tranches, with some usually provided upfront and further payments tied to specific project milestones. So even if a grant has officially been awarded, that doesn’t mean all of the funding has been disbursed, giving the Trump administration an opening to break government contracts and claw it back.
Kra told me that a few of his firm’s companies were on the verge of securing government funding before Trump took office, or have a project in the works that is now on hold. “We and the board are working closely with those companies to figure out what to do,” he told me. “If the mandates or supports aren’t there for that company, you’ve got to figure out how to make that cash last a bunch longer so you can still meet some commercially meaningful milestones.”
In this environment, Kra said his firm will be taking a closer look at companies that claim they will be able to attract federal funds. “Let’s make sure we understand what they can do without that non-dilutive capital, without those grants, without that project level support,” he told me, noting that “several” companies in his portfolio will also be impacted by Trump’s ever-changing tariffs on imports from Canada, Mexico, and China. Prelude Ventures is working with its portfolio companies to figure how to “smooth out the hit,” Kra told me later via email, but inevitably the tariffs “will affect the prices consumers pay in the short and long run.”
While investors can’t avoid the impacts of all government policies and impulses, the growth-stage firm G2 Venture Partners has long tried to inoculate itself against the vicissitudes of government financing. “None of our companies actually have any exposure to DOE loans,” Brook Porter, a partner and co-founder at G2, told me in an email, nor have they received government grants. If you add up the revenue from all of the companies in G2’s portfolio, which is made up mainly of sustainability-focused startups, only about 3% “has any exposure to the IRA,” Porter told me. So even if the law’s generous clean energy tax credits are slashed or the programs it supports are left to languish, G2’s companies will likely soldier on.
Then there are the venture capitalists themselves. Many of the investors I spoke with emphasized that not all firms will have the ability or will to weather this storm. “I definitely believe many generalist funds who dabbled in climate will pull back,” Beebe told me. Porter agreed. “The generalists are much more interested in AI, then I think in climate,” he said. It’s not as if there’s been a rash of generalist investors announcing pullbacks, though Kra told me he knows of “a couple of firms” that are rethinking their climate investment strategies, potentially opting to fold these investments under an umbrella category such as “hard tech” instead of highlighting a sectoral focus on energy or climate, specifically.
Last month, the investment firm Coatue, which has about $70 billion in assets under management, raised around $250 million for a climate-focused fund, showing it’s not all doom and gloom for the generalists’ climate ambitions. But Porter told me this is exactly the type of large firm he would expect to back out soon, citing Tiger Global Management and Softbank as others that started investing heavily during climate tech’s boom years from 2020 to 2022 that he could imagine winding down that line of business.
Strategic investors such as oil companies have also been quick to dial back their clean energy ambitions and refocus their sights on the fossil fuels championed by the Trump administration. “Corporate venture is very cyclical,” Beebe told me, explaining that large companies tend to make venture investments when they have excess budget or when a sector looks hot, but tighten the purse strings during periods of uncertainty.
But Cody Simms, a managing partner at the climate tech investment firm MCJ, told me that at the moment, he actually sees the corporate venture ecosystem as “quite strong and quite active.” The firm’s investments include the low-carbon cement company Sublime Systems, which last year got strategic backing from two of the world’s largest building materials companies, and the methane capture company Windfall Bio, which has received strategic funding from Amazon’s Climate Pledge Fund. Simms noted that this momentum could represent an overexuberance among corporations who just recently stood up their climate-focused venture arms, and “we’ll see if it continues into the next few years.”
Notably, Sublime and Windfall Bio both also have millions in DOE grants, and another of MCJ’s portfolio companies, bio-based chemicals maker Solugen, has a “conditional commitment” from the LPO for a loan guarantee of over $200 million. Since that money isn’t yet obligated, there’s a good chance it might never actually materialize, which could stall construction on the company’s in-progress biomanufacturing facility.
Simms told me that the main thing he’s encouraging MCJ’s portfolio companies to do at this stage is to contact their local representatives — not to advocate for climate action in general, but rather “to push on the very specific tax credit that they are planning to use and to talk about how it creates jobs locally in their districts.”
Getting startups to shift the narrative away from decarbonization and climate and toward their multitudinous co-benefits — from energy security to supply chain resilience — is of course a strategy many are already deploying to one degree or another. And investors were quick to remind me that the landscape may not be quite as bleak as it appears.
“We’ve made more investments, and we have a pipeline of more attractive investments now than we have in the last couple of years,” Porter told me. That’s because in spite of whatever havoc the Trump administration is wreaking, a lot of climate tech companies are reaching a critical juncture that could position the sector overall for “a record number of IPOs this year and next,” Porter said. The question is, “will these macro uncertainties — political, economic, financial uncertainty — hold companies back from going public?”
As with so many economic downturns and periods of instability, investors also see this as a moment for the true blue startups and venture capitalists to prove their worth and business acumen in an environment that’s working against them. “Now we have the hardcore founders, the people who really are driven by building economically viable, long-term, massively impactful companies, and the investors who understand the markets very well, coming together around clean business models that aren’t dependent on swinging from one subsidy vine to the next subsidy vine,” Beebe told me.
“There is no opportunity that’s an absolute no, even in this current situation, across the entire space,” the anonymous climate tech investor told me. “And so this might be one of the most important points — I won’t say a high point, necessarily — but it might be a moment of truth that the energy transition needs to embrace.”
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Representatives Jake Auchincloss and Mark Amodei want to boost “superhot” exploration.
Geothermal is about the only energy topic that Republicans and Democrats can agree on.
“Democrats like clean energy. Republicans like drilling. And everyone likes baseload power that is generated with less than 1% of the land and materials of other renewables,” Massachusetts Representative Jake Auchincloss, a Democrat, told me.
Along with Republican Representative Mark Amodei of Nevada, Auchincloss is introducing the Hot Rock Act on Friday, focusing specifically on “superhot” or “supercritical” geothermal resources, i.e. heat deposits 300 degrees Celsius or above. (Temperatures in large traditional geothermal resources are closer to 240 degrees.)
The bill — of which Heatmap got an exclusive early peek — takes a broad approach to supporting research in the sector, which is currently being explored by startups such as Quaise Energy and Mazama Energy, which in October announced a well at 331 degrees.
There’s superhot rock energy potential in around 13% of North America, modeling by the Clean Air Task Force has found — though that’s mostly around 8 miles below ground. The largest traditional geothermal facility in the U.S. is only about 2.5 miles at its deepest.
But the potential is enormous. “Just 1% of North America’s superhot rock resource has the potential to provide 7.5 terawatts of energy capacity,” CATF said. That’s compared to a little over a terawatt of current capacity.
Auchincloss and Amodei’s bill would direct the Department of Energy to establish “milestone-based research grant programs,” under which organizations that hit goals such as drilling to a specific depth, pressure, or temperature would then earn rewards. It would also instruct the DOE to create a facility “to test, experiment with, and demonstrate hot dry rock geothermal projects,” plus start a workforce training program for the geothermal industry.
Finally, it would grant a categorical exclusion from the National Environmental Policy Act for drilling to explore or confirm geothermal resources, which could turn a process that takes over a year into one that takes just a couple of months.
Geothermal policy is typically a bipartisan activity pursued by senators and House members from the Intermountain West. Auchincloss, however, is a New Englander. He told me that he was introduced to geothermal when he hosted an event in 2022 attended by executives from Quaise, which was born out of the Massachusetts Institute of Technology.
It turned out the company’s pilot project was in Nevada, and “I saw it was in Mark Amodei’s district. And I saw that Mark is on Natural Resources, which is the other committee of jurisdiction. And so I went up to him on the floor, and I was like, Hey there, you know, there's this company announcing this pilot,” Auchincloss told me.
In a statement, Amodei said that “Nevada has the potential to unlock this resource and lead the nation in reliable, clean energy. From powering rural communities and strengthening critical mineral production to meeting the growing demands of data centers, geothermal energy delivers dependable 24/7 power.”
Auchincloss told me that the bill “started from the simple premise of, How do we promote this technology?” They consulted climate and technology experts before reaching consensus on the milestone-based payments, workforce development, and regulatory relief components.
“I didn't have an ideological bent about the right way to do it,” Auchincloss said.
The bill has won plaudits from a range of industry groups, including the Clean Energy Buyers Association and Quaise itself, as well as environmental and policy organizations focused on technological development, like the Institute for Progress, Third Way, and the Breakthrough Institute.
“Our grassroots volunteers nationwide are eager to see more clean energy options in the United States, and many of them are excited by the promise of reliable, around-the-clock clean power from next-generation geothermal energy,” Jennifer Tyler, VP government affairs at the Citizens' Climate Lobby, said in a statement the lawmakers provided to Heatmap. “The Hot Rock Act takes a positive step toward realizing that promise by making critical investments in research, demonstration, and workforce development that can unlock superhot geothermal resources safely and responsibly.”
With even the Trump administration generally pro-geothermal, Auchincloss told me he’s optimistic about the bill’s prospects. “I expect this could command broad bipartisan support,” he said.
Plus a pre-seed round for a moon tech company from Latvia.
The nuclear headlines just keep stacking up. This week, Inertial Enterprises landed one of the largest Series A rounds I’ve ever seen, making it an instant contender in the race to commercialize fusion energy. Meanwhile, there was a smaller raise for a company aiming to squeeze more juice out of the reactors we already have.
Elsewhere over in Latvia, investors are backing an early stage bid to bring power infrastructure to the moon, while in France, yet another ultra-long-duration battery energy storage company has successfully piloted their tech.
Inertia Enterprises, yet another fusion energy startup, raised an eye-popping $450 million Series A round this week, led by Bessemer Venture Partners with participation from Alphabet’s venture arm GV, among others. Founded in 2024 and officially launched last summer, the company aims to develop a commercial fusion reactor based on the only experiment yet to achieve scientific breakeven, the point at which a fusion reaction generates more energy than it took to initiate it.
This milestone was first reached in 2022 at Lawrence Livermore National Laboratory’s National Ignition Facility, using an approach known as inertial confinement fusion. In this method, powerful lasers fire at a small pellet of fusion fuel, compressing it until the extremely high temperature and pressure cause the atoms inside to fuse and release energy. Annie Kritcher, who leads LLNL’s inertial confinement fusion program, is one of the cofounders of Inertia, alongside Twilio co-founder Jeff Lawson and Stanford professor Mike Dunne, who formerly led a program at the lab to design a power plant based on its approach to fusion.
The Inertia team plans to commercialize LLNL’s breakthrough by developing a new fusion laser system it’s calling Thunderwall, which it says will be 50 times more powerful than any laser of its type to date. Inertia isn’t the only player trying to commercialize laser-driven fusion energy — Xcimer Energy, for example, raised a $100 million Series A in 2024 — but with its recent financing, it’s now by far the best capitalized of the bunch.
As Lawson, the CEO of the new endeavor said in the company’s press release, “Our plan is clear: build on proven science to develop the technology and supply chain required to deliver the world’s highest average power laser, the first fusion target assembly plant, and the first gigawatt, utility-scale fusion power plant to the grid.” Great, but how soon can they do it? The goal, he says, is to “make this real within the next decade.”
In more nuclear news, the startup Alva Energy launched from stealth on Thursday with $33 million in funding and a proposal to squeeze more capacity out of the existing nuclear fleet by retrofitting pressurized-water reactors. The round was led by the venture firm Playground Global.
The startup plans to boost capacity by building new steam turbines and electricity generators adjacent to existing facilities, such that plants can stay online during the upgrade. Then when a plant shuts down for scheduled maintenance, Alva will upgrade its steam generator within the nuclear containment dome. That will allow the system to make 20% to 30% more steam, to be handled by the newly built turbine-generator system.
The company estimates that these retrofits will boost each reactor’s output by 200 megawatts to 300 megawatts. Applied across the dozens of existing facilities that could be similarly upgraded, Alva says this strategy could yield roughly 10 new gigawatts of additional nuclear capacity through the 2030s — the equivalent of building about 10 new large reactors.
Biden’s Department of Energy identified this strategy, known as “uprating”, as capable of adding 2 gigawatts to 8 gigawatts of new capacity to the grid. Alva thinks it can go further. The company promises to manage the entire uprate process from ensuring regulatory compliance to the procurement and installation of new reactor components. The company says its upgrades could be deployed as quickly as gas turbines are today — a five- to six-year timeline — at a comparable cost of around $1 billion per gigawatt.
Deep Space Energy, a Latvian space tech startup, has closed a pre-seed funding round to advance its goal of becoming a commercial supplier of electricity for space missions on the moon, Mars, or even deeper into space where sunlight is scarce. The company is developing power systems that convert heat from the natural decay of radioisotopes — unstable atoms that emit radiation as they decay — into electricity.
While it’s still very early-stage, this tech’s first application will likely be backup power for defense satellites. Long term, Deep Space Energy says it “aims to focus on the moon economy” by powering rovers and other lunar installations, supporting Europe’s goal of increasing its space sovereignty by reducing its reliance on U.S. defense assets such as satellites. While radioisotope generators are already used in some space missions, the company says its system requires five times less fuel than existing designs.
Roughly $400,000 of the funding came from equity investments from the Baltic-focused VC Outlast Fund and a Lithuanian angel investor. The company also secured nearly $700,000 from public contracts and grants from the European Space Agency, the Latvian Government, and a NATO program to accelerate innovation with dual-use potential for both defense and commercial applications.
As I wrote a few weeks ago, Form Energy’s iron-air battery isn’t the only player targeting 100-plus hours of low-cost energy storage. In that piece, I highlighted Noon Energy, a startup that recently demoed its solid-oxide fuel cell system. But there’s another company aiming to compete even more directly with Form by bringing its own iron-air battery to the European market: Ore Energy. And it just completed a grid-connected pilot, something Form has yet to do.
Ore piloted its 100-hour battery at an R&D center in France run by EDF, the state-owned electric utility company. While the company didn’t disclose the battery’s size, it said the pilot demonstrated its ability to discharge energy continuously for about four days while integrating with real-world grid operations. The test was supported by the European Union’s Storage Research Infrastructure Eco-System, which aims to accelerate the development of innovative storage solutions, and builds on the startup’s earlier grid-connected installation at a climate tech testbed in the Netherlands last summer.
Founded in 2023, Ore plans to scale quickly. As Bas Kil, the company’s business development lead, told Latitude Media after its first pilot went live, “We’re not planning to do years and years of pilot-scale [projects]; we believe that our system is now ready for commercial deployment.” According to Latitude, Ore aims to reach 50 gigawatt-hours of storage per year by 2030, an ambitious goal considering its initial grid-connected battery had less than one megawatt-hour of capacity. So far, the company has raised just shy of $30 million to date, compared to Form’s $1.2 billion.
Battery storage manufacturer and virtual power plant operator Sonnen, together with the clean energy financing company Solrite, have launched a Texas-based VPP composed exclusively of home batteries. They’re offering customers a Solrite-owned 60-kilowatt-hour battery for a $20 monthly fee, in exchange for a fixed retail electricity rate of 12 cents per kilowatt-hour — a few cents lower than the market’s average — and the backup power capability inherent to the system. Over 3,000 customers have already enrolled, and the companies are expecting up to 10,000 customers to join by year’s end.
The program is targeting Texans with residential solar who previously sold their excess electricity back to the grid. But now that there’s so much cheap, utility-scale solar available in Texas, electricity retailers simply aren’t as incentivized to offer homeowners favorable rates. This has left many residents with “stranded” solar assets, turning them into what the companies call “solar orphans” in need of a new way to make money on their solar investment. Customers without rooftop solar can participate in the program as well, though they don’t get a catchy moniker.
Current conditions: It looks like rain on Valentine’s Day across the South • Storm Nils is battering France with heavy rain and gales of up to 100 miles per hour • A Northeast Monsoon, known locally as an Amihan, is flooding the northern Philippine island of Luzon, threatening mudslides.
President Donald Trump has done what he didn’t dare attempt during his first term, repealing the finding that provided the legal basis for virtually all federal regulations to curb greenhouse gas emissions. By rescinding the 2009 “endangerment finding,” which established that planet-heating emissions harm human health and therefore qualify for restrictions under the Clean Air Act, the Trump administration hopes to unwind all rules on pollution from tailpipes, trucks, power plants, pipelines, and drilling sites all in one fell swoop. “This is about as big as it gets,” Trump said alongside Environmental Protection Agency Administrator Lee Zeldin at a White House event Thursday.
The repeal, which is sure to face legal challenges, opens up what Reuters called a new front in the legal wars over climate change. Until now, the Supreme Court had declined to hear so-called public nuisance cases brought by activists against fossil fuel companies on the grounds that the legal question of emissions was being sorted out through federal regulations. By eliminating those rules outright, litigants could once again have new standing to sue over greenhouse gas emissions. To catch up on the endangerment finding in general, Heatmap’s Robinson Meyer and Emily Pontecorvo put together a handy explainer here.
A bill winding its way through Ohio’s Republican-controlled state legislature would put new restrictions on development of wind and solar projects. The state already makes solar and wind developers jump over what Canary Media called extra hurdles that “don’t apply to fossil-fueled or nuclear power plants, including counties’ ability to ban projects.” For example, siting authorities defer to local opposition on renewable energy but “grant opponents little say over where drilling rigs and fracking waste can go.”
The new legislation would make it state policy “in all cases” for new power plants to “employ affordable, reliable, and clean energy sources.” What qualifies as “affordable, reliable, and clean”? Pretty much everything except wind and solar, potentially creating a total embargo on the energy sources at any utility scale. The legislation mirrors a generic bill promoted to states by the American Legislative Exchange Council, a right-wing policy shop.
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China’s carbon dioxide emissions fell by 1% in the last three months of 2025, amounting to a 0.3% drop for the full year. That’s according to a new analysis by Carbon Brief. The decline extends the “flat or falling” trend in China’s emissions that started in March 2024 and has now lasted nearly two years. Emissions from fossil fuels actually increased by 0.1%, but pollution from cement plunged 7%. While the grid remains heavily reliant on coal, solar output soared by 43% last year compared to 2024. Wind grew by 14% and nuclear by 8%. All of that allowed coal generation to fall by 1.9%.
At least one sector saw a spike in emissions: Chemicals, which saw emissions grow 12%. Most experts interviewed in Heatmap’s Insiders Survey said they viewed China has a climate “hero” for its emissions cuts. But an overhaul to the country’s electricity markets yielded a decline in solar growth last year that’s expected to stretch into this year.
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Rivian Automotive’s shares surged nearly 15% in after-hours trading Thursday when the electric automaker announced earnings that beat Wall Street’s expectations. While it cautioned that it would continue losing money ahead of the launch of its next-generation R2 mid-size SUV, the company said it would deliver 62,000 to 67,000 vehicles in 2026, up 47% to 59% compared with 2025. Rivian CEO RJ Scaringe told CNBC that the R2 would make up the “majority of the volume” of the business by the end of next year. He told investors 2025 was a “foundational year” for the company, but that 2026 would be “an inflection point.”
Another clean energy company is now hot on the stock market. SOLV Energy, a solar and battery storage construction contractor, secured market capitalization eclipsing $6 billion in the two days since it started trading on the Nasdaq. The company, according to Latitude Media, is “the first pure-play solar and storage” company in the engineering, procurement, and construction sector of the industry to go public since 2008.

Israel has never confirmed that it has nuclear weapons, but it’s widely believed to have completed its first operating warhead in the 1960s. Rather than give up its strategic ambiguity over its arsenal, Israel instead forfeited the development of civilian nuclear energy, which would have required opening up its weapons program to the scrutiny of regulators at the United Nations’ International Atomic Energy Agency. That apparently won’t stop the U.S. from building a reactor in Israel to power a joint industrial complex. Washington plans to develop a campus with an advanced microchip factory and data centers that would be powered by a small modular reactor, NucNet reported. So-called SMRs have yet to be built at a commercial scale anywhere in the world. But the U.S. government is betting that smaller, less powerful reactors purchased in packs can bring down the cost of building nuclear plants and appeal to fearful skeptics as a novel spin on the older technology.
In reality, SMRs are based on a range of designs, some of which closely mirror traditional, large-scale reactors but for the power output, and a growing chorus of critics say the economies of scale are needed to make nuclear projects pencil out. But the true value of SMRs is for off-grid power. As I wrote last week for Heatmap, if the U.S. government wants it for some national security concern, the price doesn’t matter as much.
Of all the fusion companies racing to build the first power plant, Helion’s promise of commercial electricity before the end of the decade has raised eyebrows for its ambition. But the company has hit a milestone. On Friday morning, Helion’s Polaris prototype became the first privately developed fusion reactor to use a deuterium-tritium fuel source. The machine also set a record with plasma temperatures 150 million degrees Celsius, smashing its own previous record of 100 million degrees with an earlier iteration of Helion’s reactor.
Editor’s note: This story has been updated to replace several items from August that ran by mistake.